I did this drawing of my dad's office in about 2 hours. It could have been done shorter, but in the middle of sketching, he came in and gave brother Adam an impromptu guitar lesson, and I had to set my notebook aside for awhile. A jam-session took place, and it was groovy. Adam on electric, and dad on acoustic. I played a little bit myself, and eventually, both Adam and our father went out and I was able to wrap up my drawing. I did it all in ballpoint pen, no tracing over pencil lines involved. What do you think?